EP0528450B1 - Structure composite ayant une structure support avec poutres ou supports en bois et une dalle de béton coulée sur place - Google Patents

Structure composite ayant une structure support avec poutres ou supports en bois et une dalle de béton coulée sur place Download PDF

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Publication number
EP0528450B1
EP0528450B1 EP92119515A EP92119515A EP0528450B1 EP 0528450 B1 EP0528450 B1 EP 0528450B1 EP 92119515 A EP92119515 A EP 92119515A EP 92119515 A EP92119515 A EP 92119515A EP 0528450 B1 EP0528450 B1 EP 0528450B1
Authority
EP
European Patent Office
Prior art keywords
composite
connecting elements
wooden
composite structure
another
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92119515A
Other languages
German (de)
English (en)
Other versions
EP0528450A3 (en
EP0528450A2 (fr
Inventor
Rudolf Spirig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SFS Handels Holding AG
Original Assignee
SFS Handels Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SFS Handels Holding AG filed Critical SFS Handels Holding AG
Priority claimed from EP90121704A external-priority patent/EP0432484B1/fr
Publication of EP0528450A2 publication Critical patent/EP0528450A2/fr
Publication of EP0528450A3 publication Critical patent/EP0528450A3/de
Application granted granted Critical
Publication of EP0528450B1 publication Critical patent/EP0528450B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
    • E04B1/164—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material with vertical and horizontal slabs, only the horizontal slabs being partially cast in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B2005/232—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with special provisions for connecting wooden stiffening ribs or other wooden beam-like formations to the concrete slab
    • E04B2005/237—Separate connecting elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0248—Increasing or restoring the load-bearing capacity of building construction elements of elements made of wood
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws

Definitions

  • the invention relates to a composite structure comprising a wooden beam or support structure and an in-situ concrete slab, wherein a threaded section of a composite element is screwed onto the top of the wooden beams or support and the head region of the composite element is designed as a reinforcing part for engaging in the in-situ concrete slab is.
  • a composite ceiling has already become known (DE-C-673 556), in which Z- or 1-iron is used to produce a shear bond between the wooden beam and an in-situ concrete slab above it.
  • Cross-slits are prepared in the wooden beam at an angle to the surface of the wooden beam, into which the free legs of the Z- or l-iron can be inserted.
  • the wooden beam is cut across its entire width with each iron to be used. There is no other way to achieve a composite effect than to provide such oblique slots.
  • the present invention has now set itself the task of significantly improving a composite construction of the type mentioned in terms of deflection.
  • the composite elements are screwed into the wooden beams or beams at an acute angle to the boundary surface formed by the top of the wooden beam or beam, and in pairs in each case side by side, the two composite elements of the pair being in opposite directions are inclined.
  • pairs of composite elements can be arranged at equal or changing distances from one another, although it may also be expedient if these pairs follow one another towards the ends of the wooden beams at a shorter distance than in the Middle area of the wooden beam is the case.
  • the composite elements of a pair preferably cross one another.
  • an advantageous embodiment variant is that the composite elements, viewed in the longitudinal direction of the wooden beam or support, are each arranged in pairs at a distance from one another, the composite elements of each pair enclosing a right or acute angle with one another, so that the head regions of the two composite elements of each pair are included are slightly inclined towards each other.
  • a form of truss girder is created, which enables an optimal mutual connection and thus the deflection of such a composite construction degraded even further. It will therefore be possible to reduce the deflection of a composite structure according to the invention by more than 50%.
  • the composite elements can be attached in one or more rows with respect to a wooden beam, the axes of the composite elements then being intended in one or in two or more parallel to one another, in the longitudinal direction of the wooden beam or beam, with vertical ( n), level (s).
  • the composite elements are screwed in at an acute angle to the top and transverse to the longitudinal direction of the wooden beam or girder.
  • Such an arrangement of the composite elements can either be in addition to the composite elements inclined in the other direction, i.e. in the longitudinal direction of the wooden beam, or it would also be conceivable to screw in all composite elements inclined in the direction transverse to the longitudinal direction of the wooden beam, even in such a case two composite elements could be arranged side by side in pairs.
  • the composite elements prefferably be screwed in at an angle both in the longitudinal direction and transversely to the wooden beam or support, that is to say with their longitudinal axis lying in an imaginary plane at an acute angle to the longitudinal vertical plane on the top of a wooden beam or support.
  • the composite element 1 shown in FIGS. 1 and 2 is used as a connection between a supporting structure 3 having a wooden beam 2 and an in-situ concrete slab 4.
  • the composite element 1 consists essentially of a head 5, a collar 6, a shaft 7, a flange 8 and a thread 9 with a screw-in tip 10.
  • the head 5 is designed to engage a turning tool, an external drive being shown in the drawing. But it would be quite conceivable to provide an internal drive on the head 5.
  • the circumferential collar 6, which projects radially beyond the head 5, connects to the head 5 on the shaft side.
  • the flange 8 is arranged at a distance from the head 5 and thus also from the collar 6 on the shaft 7.
  • the collar 6 and the flange 8 expediently have at least approximately the same external dimensions.
  • the thread 9 is provided on the section of the shaft 7 facing away from the head 5 with respect to the flange 8 and is used for screwing the composite element into the wooden beam 2.
  • the diameter of the collar 6 and the flange 8 corresponds at least approximately to twice the shaft diameter.
  • the diameter of the shaft 7 in the region between the collar 6 and the flange 8 corresponds at least approximately to the outside diameter of the thread 9 on the shaft 7.
  • the shaft section 11 in the region between the collar 6 and the flange 8 is expediently designed to be thread-free. It would be quite conceivable to design this shank region 11 in a grooved manner, but this is not necessary with regard to the correct, mutual fastening of the composite parts. This would also cause a cross-sectional weakening in the event of buckling loads.
  • the thread 9 can be designed, for example, as a wood screw thread.
  • the ratio between the core diameter and the outside diameter can be chosen to be relatively large, so that the pull-out values are very high.
  • it may be appropriate to have one at the free end of the threaded shaft Provide a drill tip or a milled tip. This eliminates the risk of splitting the wooden beam.
  • the thread 9 is advantageously designed in the manner of a self-tapping screw thread, the ratio of the core diameter to the outside diameter then being approximately 1: 1.2 to 1: 1.6.
  • Such an embodiment of the thread for the composite element according to the invention provides a core diameter of 5.15 mm and an outer thread diameter of 6.5 mm.
  • the thread pitch is 2.54 mm.
  • the axial distance between the collar 6 and the flange 8 is approximately one third of the total length of the composite element 1.
  • an arcuate cross section is provided at the transition regions 12 and 13 between the shaft 7 or shaft section 11 and the flange 8. It would also be conceivable to provide a shoulder which widens conically towards the flange 8 at the transition region 12 or 13 between the shaft 7 and the flange 8.
  • the flange 8 could have a special design, specifically this could have on its thread-side boundary surface 14 on the outer edge area of a coaxial to the shaft projecting ring section. This would make it possible to apply a special contact pressure against the top of the wooden structure, particularly at the outer edge region of the flange 8.
  • the entire composite element can be subjected to a surface treatment. This would make a galvanized version possible or just a blackened version.
  • a surface treatment With regard to the screwing in of the composite element into wood, it is expedient if at least the threaded area of the composite element 1 is provided with a wax coating or another coating which reduces the friction during screwing in.
  • the composite element according to the invention it would also be possible with the composite element according to the invention to manufacture it from rust-free material. However, since the composite element is not exposed to the weather or the atmosphere in this special type of application, such an embodiment can be dispensed with here.
  • the composite elements 1 according to the invention are expediently screwed into the wooden beams 2 with a screwdriver or a special setting tool, the collar 6 and the flange 8 in cooperation with a screwdriver nut being able to be used for proper guidance in a screwdriver channel. It is then expedient if the diameter of collar 6 and flange 8 corresponds at least approximately to the outside diameter of a screw nut that can be attached to head 5.
  • FIG. 2 shows the structure of an old ceiling, in which connection reference is also made to FIG. 3.
  • wooden beams 2 are arranged parallel to one another and run from wall to wall.
  • slats 15 and 16 are attached, on which sloping or blind floors 17 are placed.
  • sand or slag fillings were introduced between the individual wooden beams 2 on the sloping or blind floors 17, and the floor boards 18 rested on the wooden beams 2 and were e.g. fixed with nails or screws.
  • the position, dimensions and condition of the wooden beams 2 can then be determined using probe openings. In particular, the condition of the supports on the outer walls is carefully checked. Now the board layer 18 is covered with a plastic film 20, in order to achieve a seal against the entire wooden structure. By applying in-situ concrete, there is a corresponding amount of moisture or liquid that would otherwise penetrate the wooden structure. Now the composite elements 1 are screwed through the plastic film 20 and the board layer 18 into the wooden beam 2 without pre-drilling. The special thread on the composite element ensures high tensile and shear resistance of the composite elements and thus a high load capacity of the entire system.
  • the in-situ concrete slab 4 can be manufactured. Normal concrete with a maximum grain size of 8 mm is expediently used. Lightweight concrete usually has a modulus of elasticity that is too low. The thickness of the in-situ concrete slab 4 is normally 8 cm. As such, it should not be less than 6 cm. For very high demands on sound insulation and load-bearing capacity, panel thicknesses of 10 - 12 cm are possible. Depending on the structure of the ceiling and the required sound insulation, a floating screed can also be installed. At most, a carpet placed on the in-situ concrete slab 4 with the required degree of improvement is sufficient.
  • the sand or slag filling 22 filled in the ceiling construction can remain in the ceiling construction.
  • FIG. 4 shows the arrangement according to the invention of the composite elements 1 in the composite construction, specifically on the basis of a longitudinal section through a composite construction along a wooden beam 2. It can be seen from this that the composite elements 1 are formed in one of the top 30 of the wooden beam 2 Boundary surface acute angles are screwed into the wooden beams. The composite elements 1 which follow one another in the longitudinal direction of the wooden beam 2 are screwed into the wooden beams 2 inclined in opposite directions, so that a type of truss is created.
  • the composite elements 1 are screwed in pairs next to each other into the wooden beam 2, the two composite elements 1 of the pair being inclined to one another in opposite directions.
  • This special construction creates an optimally effective composite construction between the wooden beams 2 and the in-situ concrete slab 4, so that large tensile and compressive forces can also be absorbed. This limits the deflection to a minimum.
  • the composite elements 1 can also be screwed in pairs in such a manner in succession at a distance, the composite elements 1 of each pair enclosing a right or acute angle with one another.
  • the head regions of the two composite elements are thus inclined towards one another and are only a short distance apart.
  • This "oblique" arrangement of the composite elements 1 can also be carried out in a multiple arrangement, so that such composite elements are screwed into the top 30 of the wooden beam 2 next to one another, that is to say laterally offset from one another.
  • the inclination of the composite elements 1 is essentially aligned so that they lie with their central axis in a longitudinal vertical plane through the wooden beam 2. But it would also be conceivable that the composite elements 1 are screwed in at an acute angle to the upper side 30 and transversely to the longitudinal direction of the wooden beam 2. A pairwise arrangement would then also be given here.
  • a further variant provides that the composite elements 1 form an acute angle to the upper side 30 of the wooden beam 2, but the axis of such a composite element 1 lies in a plane imagined by the wooden beam 2 at an acute angle to the longitudinal vertical plane.
  • the composite construction according to the invention can be used not only in the renovation of old buildings, but also in new buildings of all kinds.
  • examples were used to explain which relate to the ceiling constructions, that is to say to floor ceilings.
  • a composite construction according to the invention can also be used in the wall area, where an in-situ concrete slab made of normal or lightweight concrete is to be anchored in a composite with a wall construction part made of wood.
  • Another area of application of the composite construction according to the invention is e.g. also when building bridges, especially where old wooden bridges are to be renovated.
  • the load-bearing capacity of old wooden bridges could be improved here, and it would therefore be easier to make decisions to preserve old wooden bridges if they could be renovated in a simple and safe manner by appropriate reinforcement using applied in-situ concrete layers.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Rod-Shaped Construction Members (AREA)

Claims (6)

  1. Construction composée d'une ossature formée d'un support ou d'une poutre en bois (2) et d'une plaque en béton coulé sur place (4), un segment d'un élément de liaison (1) muni d'un filetage (9) étant vissé dans la face supérieure de la poutre ou du support en bois (2) et la zone de tête de l'élément de liaison (1) constitue une pièce d'armature en prise dans la plaque en béton coulé sur place (4), dans laquelle les éléments de liaison (1) sont vissés suivant un angle aigu par rapport à la face supérieure (30) de la poutre ou du support en bois (2) constituant la surface limite, et chaque fois par paires, l'un à côté de l'autre, dans le support ou la poutre en bois (2) et les deux éléments de liaison (2) formant une paire sont inclinés dans des directions opposées.
  2. Construction composée selon la revendication 1,
    caractérisée en ce que
    les éléments de liaison (1) d'une paire se croisent.
  3. Construction composée selon la revendication 1,
    caractérisée en ce que
    les éléments de liaison (1) se suivent à distance dans la direction longitudinale du support ou de la poutre en bois (2), chaque fois par paires, et les éléments de liaison (1) de chaque paire font entre eux un angle droit ou aigu pour que les zones de tête des deux éléments de liaison (1) de chaque paire soient inclinées l'une de l'autre à une faible distance.
  4. Construction composée selon la revendication 1,
    caractérisée en ce que
    les axes des éléments de liaison (1) sont situés dans un ou deux ou plusieurs plans verticaux sur la surface supérieure, parallèle, dans la direction longitudinale du support ou de la poutre en bois (2).
  5. Construction composée selon la revendication 1 et/ou l'une des revendications 2, 3 et 4,
    caractérisée en ce que
    les éléments de liaison (1) sont vissés suivant un angle aigu par rapport à la face supérieure (30) et transversalement à la direction longitudinale du support ou de la poutre en bois (2).
  6. Construction composée selon la revendication 1 et l'une des revendications 2 à 5,
    caractérisée en ce que
    les éléments composés (2) sont vissés dans les directions inclinées à la fois dans la direction longitudinale et transversalement au support ou à la poutre en bois (2) et ainsi leur axe longitudinal se situe dans un plan faisant un angle aigu par rapport au plan vertical longitudinal, à la face supérieure du support ou de la poutre en bois (2).
EP92119515A 1989-11-16 1990-11-13 Structure composite ayant une structure support avec poutres ou supports en bois et une dalle de béton coulée sur place Expired - Lifetime EP0528450B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
AT2627/89 1989-11-16
AT262789 1989-11-16
DE4029134 1990-09-13
DE4029134A DE4029134A1 (de) 1989-11-16 1990-09-13 Verbundkonstruktion
EP90121704A EP0432484B1 (fr) 1989-11-16 1990-11-13 Elément de connexion

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP90121704.2 Division 1990-11-13

Publications (3)

Publication Number Publication Date
EP0528450A2 EP0528450A2 (fr) 1993-02-24
EP0528450A3 EP0528450A3 (en) 1993-03-17
EP0528450B1 true EP0528450B1 (fr) 1996-08-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92119515A Expired - Lifetime EP0528450B1 (fr) 1989-11-16 1990-11-13 Structure composite ayant une structure support avec poutres ou supports en bois et une dalle de béton coulée sur place

Country Status (2)

Country Link
EP (1) EP0528450B1 (fr)
DE (3) DE4029134A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3974599A1 (fr) * 2020-09-25 2022-03-30 Mark Friedrich Procédé de traitement des plafonds en bois dans les bâtiments, en particulier des plafonds en bois classés dans les bâtiments

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FR2751355B1 (fr) * 1996-07-16 1998-10-16 Hilti France Connecteur bois beton et procede de mise en oeuvre
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FR2808820B1 (fr) * 2000-05-12 2003-01-03 Ct D Etudes Et De Realisations Procede de liaison d'une dalle de compression en beton a un solivage en bois et connecteurs pour la mise en oeuvre du procede
DE10321947B4 (de) * 2003-05-15 2009-09-24 Häbler, Andreas, Dipl.-Ing. Verfahren zum Errichten eines Holzhauses oder dgl. Bauwerkes
DE102004001638A1 (de) 2004-01-10 2005-08-11 Fritz, Bruno O., Dipl.-Ing. (FH) Verfahren zur Herstellung eines Verbundelementes
DE102007002784A1 (de) * 2007-01-18 2008-07-31 Com-Ing Ag Holz-Beton-Verbundtragwerk
EP2103752B1 (fr) * 2008-03-20 2012-06-13 Fensterfabrik Albisrieden Ag Couverture
AT511220B1 (de) 2011-04-08 2013-01-15 Cree Gmbh Deckenelement zur ausbildung von gebäudedecken
RU2504630C1 (ru) * 2012-07-03 2014-01-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" Устройство для укрепления перекрытия с деревянными балками
ES2582252B1 (es) * 2016-06-10 2017-08-08 Universitat D'alacant / Universidad De Alicante Sistema de conexión de estructuras mixtas de hormigón y madera
EP3272961A1 (fr) * 2016-07-19 2018-01-24 Martin Opitz Élément de recouvrement en bois
CN106639091A (zh) * 2017-02-28 2017-05-10 苏州昆仑绿建木结构科技股份有限公司 一种胶合木‑混凝土组合楼盖
ES2694031A1 (es) * 2017-06-15 2018-12-17 Universidad De Valladolid Plantilla de colocación de conectores en forjado colaborante de madera-hormigón
DE102017119096A1 (de) * 2017-08-21 2019-02-21 Deutsches Zentrum für Luft- und Raumfahrt e.V. Holz-Beton-Verbunddecke
DE102018002035A1 (de) * 2017-12-14 2019-06-19 Friedrich UG Verbundsysteme (haftungsbeschränkt) Gebäudewand-Modul und Gebäudewand mit Gebäudewand-Modulen
CN109505422B (zh) * 2018-12-10 2021-04-09 浙江安地建筑规划设计有限公司 一种古建筑墙体的加固方法
DE102021124483A1 (de) 2021-09-22 2023-03-23 Axel Fischer Verfahren zum Herstellen einer Betondecke, Deckensystem aus Betondecke und Bestandsdecke, Betondecke, Gebäude
TWI812324B (zh) * 2022-07-04 2023-08-11 吉瞬興業股份有限公司 水泥木材複合螺絲

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FR2510163B1 (fr) * 1981-07-22 1986-05-02 Renofors France Procede de renforcement d'une poutre en bois
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3974599A1 (fr) * 2020-09-25 2022-03-30 Mark Friedrich Procédé de traitement des plafonds en bois dans les bâtiments, en particulier des plafonds en bois classés dans les bâtiments

Also Published As

Publication number Publication date
DE59010472D1 (de) 1996-10-02
EP0528450A3 (en) 1993-03-17
DE4029134A1 (de) 1991-05-23
DE59004903D1 (de) 1994-04-14
EP0528450A2 (fr) 1993-02-24

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